A protester has died of his wounds a day after Yemeni police fired on crowds demanding the removal of President Ali Abdullah Saleh, a hospital official said.
Doctors said 80 people were injured in the shooting, with four in a critical condition.
Policemen and security agents in civilian clothes opened fire on Tuesday as they tried to prevent people from joining thousands of demonstrators who have camped out for weeks in front of Sanaa University, witnesses told Reuters.
The state news agency Saba blamed the shooting on gunmen linked to a tribal leader and said three demonstrators and three policemen were injured. Police were searching for the gunmen to bring them to justice, it said.
Almost 30 people have died in mass protests in Yemen, which have pitted Saleh’s 32-year-old administration against opposition forces demanding his removal.
Inspired by the turmoil in Tunisia and Egypt, a wave a protests in recent weeks has shaken Yemen, a neighbour to oil giant Saudi Arabia and the poorest country on the Arabian Peninsula.
Saleh’s government has made concessions but has so far failed to quell the widespread dissent.